General

  • Target

    draft_document.xls

  • Size

    288KB

  • Sample

    221207-mttt9acg3s

  • MD5

    c331493a8114f141e781d1e6ef313d8b

  • SHA1

    40efd1edbb958610037ac48bfea8efe1b42fb572

  • SHA256

    a2ba99d5d1fb282868cb3598dc25221aa4e14db381bfd0288be19ac452ca58fe

  • SHA512

    8c14ff3c9cc20ad57eccf7e739439355eede324d59528fa50145a9f0aa957143044f1954185d60b5439ace8b0dbe979508041b10b2563b97fe27e515c8e1d629

  • SSDEEP

    6144:1k/iZ+RwPONXoRjDhIcp0fDlavx+W26nAUrxOFJkWraDUff4xpqsCou28n2cxfj8:1KsOFiWrN4xRk2awT

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    host39.registrar-servers.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    payment 12345

Targets

    • Target

      draft_document.xls

    • Size

      288KB

    • MD5

      c331493a8114f141e781d1e6ef313d8b

    • SHA1

      40efd1edbb958610037ac48bfea8efe1b42fb572

    • SHA256

      a2ba99d5d1fb282868cb3598dc25221aa4e14db381bfd0288be19ac452ca58fe

    • SHA512

      8c14ff3c9cc20ad57eccf7e739439355eede324d59528fa50145a9f0aa957143044f1954185d60b5439ace8b0dbe979508041b10b2563b97fe27e515c8e1d629

    • SSDEEP

      6144:1k/iZ+RwPONXoRjDhIcp0fDlavx+W26nAUrxOFJkWraDUff4xpqsCou28n2cxfj8:1KsOFiWrN4xRk2awT

    • AgentTesla

      Agent Tesla is a remote access tool (RAT) written in visual basic.

    • Blocklisted process makes network request

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads data files stored by FTP clients

      Tries to access configuration files associated with programs like FileZilla.

    • Reads user/profile data of local email clients

      Email clients store some user data on disk where infostealers will often target it.

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Uses the VBS compiler for execution

    • Accesses Microsoft Outlook profiles

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v6

Tasks